US11339795B2 - Air blower - Google Patents

Air blower Download PDF

Info

Publication number
US11339795B2
US11339795B2 US16/649,349 US201916649349A US11339795B2 US 11339795 B2 US11339795 B2 US 11339795B2 US 201916649349 A US201916649349 A US 201916649349A US 11339795 B2 US11339795 B2 US 11339795B2
Authority
US
United States
Prior art keywords
end surface
cup
housing
air blower
outer peripheral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
US16/649,349
Other languages
English (en)
Other versions
US20210364010A1 (en
Inventor
Yoshikazu Saka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MinebeaMitsumi Inc
Original Assignee
MinebeaMitsumi Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MinebeaMitsumi Inc filed Critical MinebeaMitsumi Inc
Assigned to MINEBEA MITSUMI INC. reassignment MINEBEA MITSUMI INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SAKA, YOSHIKAZU
Publication of US20210364010A1 publication Critical patent/US20210364010A1/en
Application granted granted Critical
Publication of US11339795B2 publication Critical patent/US11339795B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/053—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system

Definitions

  • the present invention relates to an air blower.
  • an air blower including a main fan sucking air into the air blower, an auxiliary fan attached to the main fan, and a fan motor rotating the main fan and the auxiliary fan (see Patent Literature 1).
  • the present invention has been made in view of the above problem, and an object of the present invention is to provide an air blower enabling efficient cooling.
  • the air blower includes an impeller; and a motor, wherein the impeller includes a plurality of blades and a cup arranged inside the plurality of blades, the motor includes a housing arranged inside the cup, a stator, and a rotor arranged inside the stator, and an outer peripheral surface of the cup is provided with an opening part facing an outer peripheral surface of the housing.
  • a space is formed between the cup and the housing in a radial direction, and the opening part makes a space between the cup and the plurality of blades communicate with the space between the cup and the housing.
  • the plurality of blades are first blades
  • the cup is provided with a second blade
  • the second blade extends in a radial direction from an inner peripheral surface of the cup toward the housing.
  • the cup includes a plurality of opening parts including the opening part, and the plurality of openings parts are arranged in a circumferential direction.
  • the cup includes a plurality of second blades including the second blade, and the plurality of second blades are adjacent to the plurality of respective opening parts.
  • the cup is provided with an end surface facing the housing in a rotational axis direction, an opening part is formed in the end surface, and the opening part in the end surface is continuous with the opening part formed in the outer peripheral surface of the cup.
  • the opening part is formed in the outer peripheral surface of the cup continuously from an end surface facing the housing to a bottom surface.
  • FIG. 1 A perspective view schematically illustrating a configuration of an air blower according to an embodiment of the present invention.
  • FIG. 2 An A-A sectional view of FIG. 1 schematically illustrating the configuration of the air blower according to the embodiment of the present invention.
  • FIG. 3 A perspective view schematically illustrating a configuration of an impeller of the air blower according to the embodiment of the present invention.
  • FIG. 4 A B-B sectional view of FIG. 1 schematically illustrating the configuration of the impeller of the air blower according to the embodiment of the present invention.
  • FIG. 5 A perspective view schematically illustrating a configuration of a housing of the air blower according to the embodiment of the present invention.
  • FIG. 6 A C-C sectional view of FIG. 1 schematically illustrating a configuration of an inner motor of the air blower according to the embodiment of the present invention.
  • FIG. 7 A perspective view diagrammatically illustrating a flow of wind in the air blower according to the embodiment of the present invention.
  • FIG. 1 is a perspective view schematically illustrating the configuration of the air blower 1 according to the embodiment of the present invention.
  • FIG. 2 is a sectional view of a section along the A-A line in FIG. 1 .
  • an arrow a direction in a rotational axis x direction is defined as an upper side a
  • an arrow b direction is defined as a lower side b.
  • a direction away from the rotational axis x is defined as an outer periphery side c
  • a direction toward the rotational axis x is defined as an inner periphery side d.
  • a circumferential direction around the rotational axis x is defined as a circumferential direction e.
  • the air blower 1 includes an impeller 3 rotating counterclockwise around the rotational axis x, and a motor 5 causing the impeller 3 to rotate.
  • the impeller 3 and the motor 5 are accommodated inside a case 10 .
  • the case 10 includes an accommodating part 11 covering the impeller 3 , and a bottom part 12 arranged at the lower side b of the accommodating part 11 .
  • the accommodating part 11 includes a top wall part 11 a having an opening formed at the upper side a, and a side wall part 11 c surrounding the outer periphery side c of the impeller 3 along an outer periphery part of the top wall part 11 a .
  • the top wall part 11 a forms a wall part projecting radially inward from the side wall part 11 c.
  • the bottom part 12 includes a support part 12 a formed of a plate-like member in an annular shape and supports a housing 51 of the motor 5 (described later), and a cover part 12 b arranged at the lower side b of the support part 12 a and covers the lower side b of the motor 5 .
  • the accommodating part 11 and the bottom part 12 are coupled with joint members such as screws.
  • the opening in the top wall part 11 a serves as an inlet port 10 a having a circular shape and sucking air.
  • the case 10 includes an outlet port 10 b formed of a portion of the accommodating part 11 extended toward the outer periphery side c and a portion of the bottom part 12 extended toward the outer periphery side c and discharges air.
  • FIG. 3 is a perspective view schematically illustrating the configuration of the impeller 3 .
  • FIG. 4 is a sectional view of a section along the B-B line in FIG. 1 .
  • the impeller 3 includes an impeller body 31 , multiple first blades 32 arranged at an inner peripheral surface of the impeller body 31 at equal intervals along the circumferential direction e of the rotational axis x, and a cup 33 arranged further toward the inside d of the multiple first blades 32 . Between the cup 33 and the housing 51 (described later), there are formed a space S 1 and a space S 2 .
  • the space S 1 and the space S 2 are formed in an annular shape in the circumferential direction e.
  • the impeller body 31 has a disk-like shape centered about the rotational axis x, and includes a base 34 arranged at the lower side b of the cup 33 , an upper frame 35 arranged at the upper side a of the base 34 , and a bottom frame 36 arranged at the outer periphery side c of the base 34 .
  • the first blades 32 extend from the outer periphery side c toward the inner periphery side d, and are arranged between the upper frame 35 and the base 34 or the bottom frame 36 . Specifically, at the upper side a in the rotational axis x direction, portions of the respective first blades 32 at the outer periphery side c are connected to the upper frame 35 of the impeller body 31 . Also, at the lower side b in the rotational axis x direction, portions of the respective first blades 32 at the outer periphery side c are connected to the bottom frame 36 of the impeller body 31 , and portions of the respective first blades 32 at the inner periphery side d are connected to the base 34 of the impeller body 31 . In other words, the first blades 32 are formed extending from the upper frame 35 to the bottom frame 36 of the impeller body 31 in the rotational axis x direction.
  • the cup 33 includes an accommodating part 41 in a cup shape covering the upper side a of the housing 51 (described later) in the rotational axis x direction, and second blades 42 extending from an inner peripheral surface 41 d of the accommodating part 41 facing the inner periphery side d toward the housing 51 and project so as not to contact an outer peripheral surface 51 c of the housing 51 .
  • the cup 33 is provided with the second blades 42 , and the second blades 42 extends radially from the inner peripheral surface 41 d of the cup 33 toward the housing 51 .
  • the cup 33 includes the multiple second blades 42 , and the multiple second blades 42 are adjacent to respective multiple opening parts 43 (described later).
  • the accommodating part 41 is provided with the opening parts 43 making the space S 1 formed between the cup 33 and the multiple first blades 32 communicate with the space S 2 formed between the cup 33 and the housing 51 (described later).
  • the circumferential direction e multiple gaps S 3 each being a portion of the space S 2 are formed between the cup 33 and the housing 51 (described later).
  • the accommodating part 41 has a planar shape formed by cutting out semicircular or substantially semicircular end surface opening parts 45 (described later) from a circular shape or a substantially circular shape.
  • the accommodating part 41 includes an upper end surface 41 a being a surface at the upper side a, a lower end surface 41 b being a surface at the lower side b, an outer peripheral surface 41 c between the upper end surface 41 a and the lower end surface 41 b and facing the multiple first blades 32 , and an inner peripheral surface 41 d between the upper end surface 41 a and the lower end surface 41 b and facing the housing 51 (described later) of the motor 5 .
  • the accommodating part 41 also includes a projection part 41 e and a hole part 41 f .
  • the projection part 41 e projects toward the upper side a farther than the upper end surface 41 a and holds a shaft 75 (see FIG. 5 ) and a fixing part 78 (see FIG. 5 ) inside the projection part 41 e .
  • the shaft 75 penetrates the hole part 41 f .
  • These projection part 41 e and hole part 41 f are arranged at the upper side a and the outer periphery side c of the housing 51 (described later) in the rotational axis x direction.
  • the height of the accommodating part 41 from the upper end surface 41 a to the lower end surface 41 b is smaller than the height of the impeller body 31 and the first blades 32 .
  • the lower end surface 41 b of the accommodating part 41 in the rotational axis x direction is connected to the base 34 of the impeller body 31 , and the accommodating part 41 is rotatable about the rotational axis x integrally with the impeller body 31 and the multiple first blades 32 .
  • each opening part 43 includes an opening part (hereinafter referred to as an outer peripheral opening part) 44 formed in the outer peripheral surface 41 c of the accommodating part 41 and faces the outer peripheral surface 51 c of the housing 51 (described later), and an opening part (hereinafter referred to as an end surface opening part) 45 formed in the upper end surface 41 a facing the housing 51 (described later), and the outer peripheral opening part 44 and the end surface opening part 45 are spatially continuous.
  • outer peripheral opening parts 44 are formed at equal intervals in the outer peripheral surface 41 c of the accommodating part 41 .
  • the outer peripheral opening parts 44 are each formed in a rectangular shape or a substantially rectangular shape in the outer peripheral surface 41 c of the accommodating part 41 from the upper end surface 41 a to the lower end surface 41 b .
  • the outer peripheral opening parts 44 extend from the upper end surface 41 a to the lower end surface 41 b in the rotational axis x direction and provide communication between the space S 1 between the cup 33 and the multiple first blades 32 and the space S 2 between the cup 33 and the housing 51 (described later). Portions of the housing 51 and the rotor 52 (described later) are exposed through the outer peripheral opening parts 44 .
  • end surface opening parts 45 are formed at equal intervals along the circumferential direction e of the upper end surface 41 a of the accommodating part 41 .
  • the end surface opening parts 45 are each formed in a semicircular shape when viewed from the upper side a in the rotational axis x direction, and opened toward the upper side a in the rotational axis x direction.
  • the end surface opening parts 45 are opened toward the upper side a in the space S 1 . Portions of the housing 51 and the rotor 52 (described later) are exposed to the space S 1 through these end surface opening parts 45 .
  • each opening part 43 is formed spatially continuously.
  • the opening part 43 is an opening formed continuously from the upper end surface 41 a to the lower end surface 41 b , and portions of the housing 51 and the rotor 52 (described later) are exposed through the opening parts 43 .
  • the second blades 42 provided to the accommodating part 41 of the cup 33 each include an intermediate part 42 a arranged at the inner peripheral surface 41 d side of the accommodating part 41 in the rotational axis x direction so as to extend along the rotational axis x, an end part (hereinafter referred to as an upper side tip end part) 42 b extending from the upper side a of the intermediate part 42 a toward the housing 51 (described later), and an end part (hereinafter referred to as a lower side rounded end part) 42 c provided at the lower side b of the intermediate part 42 a.
  • each second blade 42 is formed from the upper end surface 41 a to the lower end surface 41 b of the accommodating part 41 between the adjacent opening parts 43 , and the intermediate part 42 a , the upper side tip end part 42 b , and the lower side rounded end part 42 c each projecting toward the inner periphery side d are arranged with a gap S 3 from the outer peripheral surface 51 c of the housing 51 .
  • each second blade 42 is curved from the upper side tip end part 42 b toward the intermediate part 42 a , and formed in a shape conforming to the outer peripheral surface 51 c of the housing 51 with a certain distance kept between the outer peripheral surface 51 c of the housing 51 and the second blade 42 throughout its upper side tip end part 42 b , intermediate part 42 a , and lower side rounded end part 42 c .
  • the gap S 3 is a portion of the space S 2 at which the radial width of the space S 2 is reduced by a projecting amount of the second blade 42 from the inner peripheral surface 41 d of the accommodating part 41 to the inner periphery side d.
  • FIG. 5 is a perspective view schematically illustrating a configuration of the housing 51 of the motor 5 .
  • FIG. 6 is a sectional view of a section along the C-C line of FIG. 1 , schematically illustrating a configuration of the rotor 52 of the motor 5 .
  • the motor 5 includes the housing 51 arranged inside the accommodating part 41 (see FIG. 2 ) of the cup 33 , a stator 73 , and the rotor 52 arranged inside the stator 73 .
  • the rotor 52 is arranged inside the stator.
  • the housing 51 includes an upper end surface 51 a being a surface at the upper side a in the rotational axis x direction, a lower end surface 51 b being a surface at the lower side b, and an outer peripheral surface 51 c between the upper end surface 51 a and the lower end surface 51 b .
  • a portion of the rotor 52 at the upper side a in the rotational axis x direction is accommodated inside the housing 51 .
  • the upper end surface 51 a of the housing 51 is provided with a hole part 53 in a circular shape, the shaft 75 of the rotor 52 (described later) passing through the hole part 53 , and a projection part 54 in an annular shape projecting from the upper end surface 51 a in the rotational axis x direction.
  • the hole part 53 and the projection part 54 provided to the housing 51 are accommodated in the projection part 41 e of the accommodating part 41 (see FIG. 2 ).
  • the fixing part 78 of the rotor 52 (described later) is arranged at the inside d of the projection part 54 of the housing 51 (see FIG. 2 ).
  • an outer peripheral part of the lower end surface 51 b projects toward the outer periphery side c farther than the upper end surface 51 a and is supported by the support part 12 a of the case 10 from the lower side b (see FIG. 2 ).
  • multiple hole parts 55 in a rectangular shape are formed, a portion of the rotor 52 being exposed through the hole parts 55 .
  • the multiple hole parts 55 are formed in a lattice shape by arranging multiple vertical frames 61 a provided between the upper end surface 51 a and the lower end surface 51 b in the rotational axis x direction and multiple horizontal frames 61 b provided in the middle or substantially in the middle of the upper end surface 51 a and the lower end surface 51 b .
  • the horizontal frames 61 b extend in a direction intersecting the rotational axis x direction and intersect the vertical frames 61 a .
  • a portion of the rotor 52 is exposed through the multiple hole parts 55 to the space S 2 between the cup 33 and the housing 51 .
  • the rotor 52 includes a frame 71 in a cylindrical shape, an inner rotor 72 rotatably supported by bearings 74 a , 74 b (described later) in the frame 71 , and the stator 73 surrounding the inner rotor 72 .
  • the frame 71 includes, inside thereof, the bearing 74 a rotatably supporting a portion of the inner rotor 72 at the upper side in the rotational axis x direction, and the bearing 74 b rotatably supporting a portion of the inner rotor 72 at the lower side b in the rotational axis x direction.
  • the inner rotor 72 includes a shaft 75 projecting from a portion of the frame 71 at the upper side in the rotational axis x direction, a core 76 formed in an annular shape so as to surround the shaft 75 , and a magnet 77 formed in an annular shape so as to surround a surface of the core 76 at the outer periphery side c.
  • a portion of the shaft 75 at the upper side a penetrates the hole part 53 of the housing 51 and the hole part 41 f of the accommodating part 41 .
  • the upper side a of the shaft 75 is provided with the fixing part 78 formed in an annular shape so as to surround an outer peripheral surface of the shaft 75 and for fixing the impeller 3 .
  • the fixing part 78 is arranged at the inner periphery side d of the projection part 54 of the housing 51 and at the inside of the projection part 41 e of the accommodating part 41 .
  • the stator 73 includes a stator core 79 formed in an annular shape so as to surround the inner rotor 72 , a coil 80 , and an insulator (not shown in the figure) insulating the stator core 79 from the coil 80 .
  • the coil 80 is wound around teeth (not shown in the figure) of the stator core 79 , and the teeth extend in a direction from the stator core 79 toward the inner rotor 72 .
  • FIG. 7 is a perspective view diagrammatically illustrating a flow of wind by the air blower 1 .
  • the air introduced from the inlet port 10 a flows into the inside of the cup 33 from the outer peripheral opening parts 44 or the end surface opening parts 45 of the respective opening parts 43 while circulating in the space S 1 .
  • a portion of the air introduced from the inlet port 10 a flows into the space S 2 between the cup 33 and the housing 51 from the space S 1 between the cup 33 and the multiple first blades 32 and through the opening parts 43 .
  • the air having flowed into the inside of the cup 33 flows in an arrow G 2 direction along with rotation of the cup 33 of the impeller 3 .
  • the cup 33 is provided with the second blades 42 , the air having flowed into the space S 2 increases its flow strength in the arrow G 2 direction and the flow rate increases.
  • the air having flowed into the space S 2 circulates in the space S 2 or is guided in the vicinity of the outlet port 10 b in an arrow G 3 direction to be discharged.
  • the outer peripheral surface 41 c of the accommodating part 41 in the air blower 1 is formed with the opening parts 43 making the space S 1 between the cup 33 and the multiple first blades 32 communicate with the space S 2 between the cup 33 and the housing 51 , it is possible to easily and efficiently cool the motor 5 arranged inside the accommodating part 41 .
  • the cup 33 is provided with the second blades 42 extending from the inner peripheral surface 41 d of the accommodating part 41 toward the housing 51 . For this reason, the air introduced into the space S 2 increases its flow strength in the arrow G 2 direction and the flow rate increases. Accordingly, it is possible to efficiently cool the motor 5 .
  • the second blades 42 are provided in the impeller 3 , the second blades 42 also serve as ribs, and this makes it possible to significantly increase the strength of the cup 33 .
  • the opening parts 43 of the accommodating part 41 each include the outer peripheral opening part 44 formed in the outer peripheral surface 41 c of the accommodating part 41 and the end surface opening part 45 formed in the upper end surface 41 a of the accommodating part 41 and the opening parts 43 are each formed continuously from the upper end surface 41 a to the lower end surface 41 b , it is possible to easily produce the air current from the arrow G 2 direction to the arrow G 3 direction and thus to efficiently cool the motor 5 as a whole.
  • the outer peripheral surface 51 c of the housing 51 is formed with the multiple hole parts 55 , a portion of the rotor 52 being exposed through the hole parts 55 . Since the coil 80 serving as a hear source is arranged at the outer periphery side c of the rotor 52 in the rotational axis x direction, it is possible to efficiently cool the coil 80 .
  • the opening part 43 having the outer peripheral opening part 44 and the end surface opening part 45 , but the opening part 43 may have only either one of the outer peripheral opening part 44 or the end surface opening part 45 .
  • the shape of the opening part 43 is not limited to the shape shown in the figures, and may be modified as appropriate.
  • the opening part 43 may be an opening part in a rectangular shape or a round shape not formed extending from the upper end surface 41 a to the lower end surface 41 b in the outer peripheral surface 41 c but formed between the upper end surface 41 a and the lower end surface 41 b.
  • the hole parts 55 being formed in the outer peripheral surface 51 c of the housing 51 by arranging the vertical frames 61 a and the horizontal frames 61 b in a lattice shape, but the hole parts 55 may be formed by arranging either of the vertical frames 61 a or the horizontal frames 61 b at the outer peripheral surface 51 c .
  • the shape and number of hole parts formed in the outer peripheral surface 51 c of the housing 51 may be modified as appropriate.
  • Embodiments of the present invention have been explained above, but the present invention is not limited to the air blower 1 according to the above embodiments of the present invention, and includes every mode encompassed by the concept of the present invention and the claims. Also, the configurations may be selectively combined as appropriate to solve or provide at least part of the above-described problems or effects. For example, the shape, material, arrangement, size and the like of the components in the above embodiments may be modified as appropriate in accordance with specific forms of use of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US16/649,349 2018-03-20 2019-01-28 Air blower Active US11339795B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2018-052088 2018-03-20
JP2018052088A JP7089383B2 (ja) 2018-03-20 2018-03-20 送風機
JPJP2018-052088 2018-03-20
PCT/JP2019/002764 WO2019181208A1 (ja) 2018-03-20 2019-01-28 送風機

Publications (2)

Publication Number Publication Date
US20210364010A1 US20210364010A1 (en) 2021-11-25
US11339795B2 true US11339795B2 (en) 2022-05-24

Family

ID=67986396

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/649,349 Active US11339795B2 (en) 2018-03-20 2019-01-28 Air blower

Country Status (4)

Country Link
US (1) US11339795B2 (ja)
JP (1) JP7089383B2 (ja)
CN (1) CN111164313B (ja)
WO (1) WO2019181208A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021192916A1 (ja) 2020-03-24 2021-09-30 住友電気工業株式会社 複合材料、及び放熱部材
WO2023135782A1 (ja) * 2022-01-17 2023-07-20 三菱電機株式会社 遠心送風機、および室内機

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06294399A (ja) 1993-04-12 1994-10-21 Matsushita Refrig Co Ltd 送風機
JP2000050602A (ja) 1998-07-28 2000-02-18 Calsonic Corp 送風機用のブラシレスモータ
JP2003214386A (ja) 2002-01-28 2003-07-30 Matsushita Ecology Systems Co Ltd 遠心羽根車
JP2006298180A (ja) 2005-04-21 2006-11-02 Calsonic Kansei Corp ブロワモータ冷却構造
CN102062120A (zh) 2009-11-16 2011-05-18 罗伯特·博世有限公司 开口轮毂的离心式鼓风机组件
JP2012013035A (ja) 2010-07-02 2012-01-19 Daikin Industries Ltd 送風装置
JP2013106411A (ja) 2011-11-11 2013-05-30 Asmo Co Ltd 回転電機
CN203879808U (zh) 2014-06-18 2014-10-15 南方英特空调有限公司 汽车空调鼓风机

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06294399A (ja) 1993-04-12 1994-10-21 Matsushita Refrig Co Ltd 送風機
JP2000050602A (ja) 1998-07-28 2000-02-18 Calsonic Corp 送風機用のブラシレスモータ
JP2003214386A (ja) 2002-01-28 2003-07-30 Matsushita Ecology Systems Co Ltd 遠心羽根車
JP2006298180A (ja) 2005-04-21 2006-11-02 Calsonic Kansei Corp ブロワモータ冷却構造
CN102062120A (zh) 2009-11-16 2011-05-18 罗伯特·博世有限公司 开口轮毂的离心式鼓风机组件
US20110116928A1 (en) * 2009-11-16 2011-05-19 Robert Bosch Gmbh Open-hub centrifugal blower assembly
JP2012013035A (ja) 2010-07-02 2012-01-19 Daikin Industries Ltd 送風装置
CN102959251A (zh) 2010-07-02 2013-03-06 大金工业株式会社 送风装置
US20130094954A1 (en) * 2010-07-02 2013-04-18 Daikin Industries, Ltd. Blower device
US20140147728A1 (en) 2010-07-02 2014-05-29 Samsung Sdi Co., Ltd. Battery cell connector, method for producing a battery cell connector, battery, battery system, and motor vehicle
JP2013106411A (ja) 2011-11-11 2013-05-30 Asmo Co Ltd 回転電機
CN203879808U (zh) 2014-06-18 2014-10-15 南方英特空调有限公司 汽车空调鼓风机

Non-Patent Citations (8)

* Cited by examiner, † Cited by third party
Title
English translation of the Written Opinion for corresponding International Application No. PCT/JP2019/002764 dated Apr. 23, 2019.
First Office Action dated Oct. 20, 2021 for corresponding Chinese Application No. 201980004759.8 and English translation.
International Preliminary Report on Patentability for corresponding International Application No. PCT/JP2019/002764 dated Sep. 22, 2020.
International Search Report for corresponding International Application No. PCT/JP2019/002764 dated Apr. 23, 2019.
Notice of Reasons for Refusal dated Apr. 4, 2022 for corresponding Japanese Application No. 2018-052088 and English translation.
Notice of Reasons for Refusal dated Dec. 6, 2021 for corresponding Japanese Application No. 2018-052088 and English translation.
Office Action dated Sep. 27, 2021 for corresponding Japanese Application No. 2018-052088 and English translation.
Written Opinion for corresponding International Application No. PCT/JP2019/002764 dated Apr. 23, 2019.

Also Published As

Publication number Publication date
JP7089383B2 (ja) 2022-06-22
WO2019181208A1 (ja) 2019-09-26
CN111164313A (zh) 2020-05-15
JP2019163721A (ja) 2019-09-26
CN111164313B (zh) 2022-05-17
US20210364010A1 (en) 2021-11-25

Similar Documents

Publication Publication Date Title
US7946804B2 (en) Axial fan unit having reduced noise generation
US8593022B2 (en) Electric motor with heat dissipation structure
US20190145429A1 (en) Axial fan
JP2007224779A (ja) ファンモータ
US11339795B2 (en) Air blower
EP2940839A2 (en) Self-cooled motor
JP2019161849A (ja) ファンモータ装置およびファンモータ装置の保護カバー
US9890798B2 (en) Axial fan
JP2016037958A (ja) 軸流ファンおよびファンユニット
US10666114B2 (en) Motor
WO2017051784A1 (ja) モータ、および回転プロペラ装置
US10224777B2 (en) Brushless motor with water stopping walls creating labyrinth structure
WO2020145219A1 (ja) モータ、回転翼装置
JP2019113000A (ja) 遠心ファン
JP2019218938A (ja) 軸流ファン
JP6950422B2 (ja) 遠心ファン
CN114135501A (zh) 旋转设备
JP2017200354A (ja) ブラシレス回転電機
US11708837B2 (en) Fan and electric machine assembly and methods therefor
US20080100160A1 (en) Fan apparatus
JP7009825B2 (ja) モータおよび送風機
EP3364527B1 (en) Electric motor and blower
JPH0779542A (ja) 突極形回転電機の通風冷却構造
US11808271B2 (en) Axial fan
WO2021033707A1 (ja) ダクテッドファン

Legal Events

Date Code Title Description
FEPP Fee payment procedure

Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

AS Assignment

Owner name: MINEBEA MITSUMI INC., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SAKA, YOSHIKAZU;REEL/FRAME:052243/0334

Effective date: 20200210

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: NOTICE OF ALLOWANCE MAILED -- APPLICATION RECEIVED IN OFFICE OF PUBLICATIONS

STPP Information on status: patent application and granting procedure in general

Free format text: NOTICE OF ALLOWANCE MAILED -- APPLICATION RECEIVED IN OFFICE OF PUBLICATIONS

Free format text: AWAITING TC RESP., ISSUE FEE NOT PAID

STPP Information on status: patent application and granting procedure in general

Free format text: PUBLICATIONS -- ISSUE FEE PAYMENT VERIFIED

STCF Information on status: patent grant

Free format text: PATENTED CASE